It probably couldn't hurt. Last year I purchased charcoal pills and began them about 35 days before season began. They say the charcoal cleanses your body (through absorbing) odors and other bacteria that causes odor. While I can't say it worked, I also can't prove that it didn't. It was relatively inexpensive and why not try it.
Confidence in the stand is critical, and while i'm not sold on the product, unless the price increases, I'll likely give it a try this year too.

I started taking chlorophyll tablets a couple weeks before bow season opens and last year continued to take them throughout the year . There are several benefits to the tablets .

Health Benefits of Chlorophyll
True enough, chlorophyll has been seen to provide health benefits to those who take them. It has anti-oxidant, anti-inflammatory and wound-healing properties. Here are some of the known chlorophyll benefits:

 It has been seen to help in the growth and repair of tissues.

 Chlorophyll helps in neutralizing the pollution that we breathe in and intake everyday - a good supplement for smokers

 It efficiently delivers magnesium and helps the blood in carrying the much needed oxygen to all cells and tissues.

 It is also found to be useful in assimilating and chelating calcium and other heavy minerals.

 It had been seen to have a good potential in stimulating red blood cells to improve oxygen supply.

 Along with other vitamins such as A, C and E, chlorophyll has been seen to help neutralize free radicals that do damage to healthy cells.